Original title: On the electrospinning of PVB solutions
Authors: Švrčinová, Petra ; Filip, Petr ; Lubasová, D.
Document type: Papers
Conference/Event: NANOCON 2010. International Conference /2./, Olomouc (CZ), 2010-10-12 / 2010-10-14
Year: 2010
Language: eng
Abstract: Extension rheological characteristics belong to the principal description of polymer jet formation during a process of electrospinning. However, in spite of nearly absence of shear deformation of polymer solutions during the process of their spinnability, it seems that shear electrorheological characteristics can serve as an indicator of good or bad quality of an electrospun template. The experiments were carried out with four polyvinylbutyral (PVB) solutions in concentration of 10 wt%. Shear viscosities in absence (η0) and presence (η) of electric field were measured using a rotational rheometer equipped with an electrorheological cell. It was shown that the good solvents of PVB exhibit an almost constant curve of η/η0 vs. electric field strength, whereas the viscosity curves for the poor solvents exhibit enhancement. This enhancement corresponds to better quality of electrospun templates (obtained for polymer solutions of PVB with poor solvents).
Keywords: electrospinning; elongational viscosity; polyvinylbutyral (PVB)
Project no.: CEZ:AV0Z20600510 (CEP), IAA200600703 (CEP)
Funding provider: GA AV ČR
Host item entry: Conference Proceedings, ISBN 978-80-87294-19-2

Institution: Institute of Hydrodynamics AS ČR (web)
Document availability information: Fulltext is available on demand via the digital repository of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0189283

Permalink: http://www.nusl.cz/ntk/nusl-41802


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Research > Institutes ASCR > Institute of Hydrodynamics
Conference materials > Papers